Smells Flashcards
Esters are a family of compounds used as synthetic perfumes
How are esters made and what is produced
Esters are made by reacting alcohol with an organic acid. This produces an ester and water
Soluble substances…
Dissolve in a liquid (nail varnish in ethyl ethanoate)
Insoluble substances…
Insoluble substances do not dissolve in a liquid (nail varnish is insoluble in water)
A solvent…
The liquid into which a substance is dissolved
The solute is…
The substance that gets dissolved
A solution is…
What you get when you mix a solvent and solute
Can solutions separate out
No
What are some sources of perfume (different types)
Natural sources or synthetic
What are the arguments on testing perfumes on animals
Some say it is cruel and pointless as animals have different body chemistry
Others say tests are useful to prevent humans from harm
Perfumes are volatile and evaporate easily
Why is this
Molecules in perfume are held together by weak intermolecular forces
Molecules that escape have lots of energy and easily overcome the weak attraction to other molecules in the liquid
Why won’t water dissolve in nail varnish
Attraction between water molecules is stronger than attraction between water and nail varnish molecules
Attraction between nail varnish molecules is stronger than attraction between water and nail varnish molecules 💅🏻
A perfume must…
Evaporate easily
Not be toxic or irritate the skin
Not dissolve or react with water
